What is it that makes a man, in the heat of the moment of an Yngwie Malmsteen or Iron Maiden guitar solo, grimace, thrust their crotch, and place hands on an imaginary guitar? "Air Guitar Nation" — is a documentary that seeks to answer that burning question.

Perhaps those of you with only passing knowledge will find the whole air-guitar phenomenon a bit silly. Well, along comes this insider's look to prove to you that you are entirely correct. Not that the director — an accomplished player of invisible guitars — ever intended that. But he does succeed in increasing tolerance, if not understanding, of this much-maligned — dare I say it? — art form.

Unbeknownst to those of us who, well, have lives, for about a decade now they've been holding air-guitar championships in Finland, and the event has managed to attract contestants from all over the globe. This documentary follows the American contenders from 2003, the first year in which America participated, and also a year when they took home the prize.